morolakejoseph morolakejoseph
  • 17-09-2021
  • Physics
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How many significant figures should be written in the sum 4.65g +9.032g+580.0078+540.439g?

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xavierianamit
xavierianamit xavierianamit
  • 17-09-2021

Answer: 1.13 X 10^3 g or 1130 g

Explanation: When you add up everything, you will get 1134.1288 g = 1.11341218 X 10^3. But while adding significant figures, we always look for the least significant figures (here 4.65 has least sig. figures  i.e. 3) and take that as a reference to how many significant figures we should have in the answer. (Pretty hard to explain!) Hope you got it!!

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